CVE-2026-87665: medium-severity vulnerability in Brocade Fabric OS
Published
10Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6
exploitation probability
—
observed exploitation
nono source reports it
A stack-based buffer overflow vulnerability exists in the Internet Key Exchange (IKEv2) protocol handler on Brocade Fabric OS versions before 10.0.1. The vulnerability occurs when processing initial IKE key exchange requests on extension switches or blades running IPsec-enabled Fibre Channel over IP (FCIP) circuits. An unauthenticated remote attacker can exploit this vulnerability by sending a single, specifically crafted UDP packet (Port 500) containing an oversized Nonce payload. Successful exploitation results in a denial of service (data-plane process crash)
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Affected products
Brocade · Fabric OSRelated CVEs — Brocade Fabric OS
In the same product, most dangerous first.
CVE-2025-1976HIGHCode injection exposure in Fabric OS 9.1.0 through 9.1.1d6EPSS 0.7%KEVCVE-2023-3454HIGHCVE-2023-3454EPSS 1.2%CVE-2024-10403MEDIUMSFTP/FTP password could be captured in plain text in Supportsave generated from SANnavEPSS 0.7%CVE-2025-58382HIGHPrivilege escalation in Brocade Fabric before 9.2.1c2 and 9.2.2 through 9.2.2aEPSS 0.6%CVE-2023-31927MEDIUMAn information disclosure in the web interface of Brocade Fabric OSEPSS 0.6%CVE-2024-7517HIGHPrivileged escalation via crafted use of portcfg commandEPSS 0.6%